Backspace 15" vs 17"

[89GMCJimmy]

1989 GMC Jimmy 15"x8" with 3.75" backspace and 1/4-3/8 space between rim and Tie rods
If I move up to a 17" rim will a 4.5" back space work?
Not too many options for 17" or 18" (simple style) rims with less than 4" back space
If this has been answered already sorry I haven't found yet
Thanks

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[78C10BigTen]

Looks good as is!

 

[89GMCJimmy]

i'm hoping to reduce some steering play/slop. With the push pull steering it will never feel super tight but it will feel a litter tighter
i wanna reduce sidewall height keep 33" over all

 

[RoryH19]

I'm going with 17s with 33s as well.
Same reason as you and would like to put a newer rear axle with disk brakes.

Ebay has several options that are supposed to fit our 6 lugs.
There are American Racing 17x9 that are very close to the ones you have.

 

[89GMCJimmy]

Rory
Do you know what is the MAXIMUM backspacing that will fit?
My 15" with BS 3.75" is pretty much it, I think slightly more with a 17" rim but not sure how much
If a 17" with 4.5" backspace works that would open up many options

 

[colonel mustard]

I had a 15x10 with a 3.5" backspacing. I just moved to a 17"x9 with a 4.5" bs. it clear everything with room left over.

 

[TubeTruck]

I had a 15x10 with a 3.5" backspacing. I just moved to a 17"x9 with a 4.5" bs. it clear everything with room left over.

What size tire are you running? How flush is it to the outside of the fenders?

 

[colonel mustard]

The rear is mostly flush. The front sticks out about 1/2” maybe a little more. It looks great. I just prefer thee wider stance.
I’ll take some pictures today


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